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Decision Support System of GIS Environmental Assessment in Xiamen Island

Author: ZouJunYi
Tutor: JiangQingShan
School: Xiamen University
Course: Environmental Management
Keywords: GIS Environment Assessment Digital Map Environmental Model
CLC: X820
Type: Master's thesis
Year: 2008
Downloads: 200
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Abstract


Environmental assessment is a complex, systematic work. Because of the complexity, dynamic and uncertainties features of environmental systems, to establish accurate and dynamic environment assessment models need the support of a variety of techniques.Geographic Information System (GIS) and Decision Support System (DSS) combined with each other to set up a spatial decision support system. Environmental models, such as atmospheric pollutants diffusion model, environmental water quality model, noise diffusion model and so forth, using in environmental assessment, can be displayed intuitively and accurately in this system.With the planning and establishment of some important chemical plants and key polluting enterprises in Xiamen, environmental risk assessment, sudden disaster evaluation, emergency response are becoming increasingly important.Considering the rapid development of Xiamen industry, we develop the Decision Support System of GIS environmental assessment in Xiamen Island. This research focuses on solving the integrated methods between environmental models and GIS software. The models include vapor cloud explosion (VCE) damage model and Gaussian atmospheric dispersion model. Our main researches are as follows:1. Through using Visual C# programming language, the Decision Support System of GIS Environmental Assessment in Xiamen Island realizes the VCE model, simulates the VCE hazard and evaluates the risk rating;2. Through studying and calculating the Gaussian atmospheric dispersion model in the downwind direction automatically, the system made the model dynamic. The Surfer software made up for the GIS contour drawing function. Therefore the system combined variety of software to achieve functions integration;3. In the Decision Support System of GIS Environmental Assessment, simulation results and the digital map overlapped according to the same coordinate. The digital map offered a more user-friendly interface and convenient methods to access to information. The Decision Support System of GIS Environmental Assessment in Xiamen Island achieves real-time monitoring of the disaster, the rapid feedback of pollution conditions and pollution forecast. It has many advantages. The functions of this system can be expanded in many fields.

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CLC: > Environmental science, safety science > Environmental Quality Assessment and Environmental Monitoring > Analysis and Evaluation of Environmental Quality > General issues
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